Introducing the SEL1224GM Full Frame Lens: A large aperture, ultra-wide angle zoom lens for stills and movies. Featuring an advanced optical design that includes three XA (extreme aspherical) elements, one aspherical, two super ED and three ED (Extra-low Dispersion) elements for incredible corner-to-corner high-resolution, along with beautiful background defocus (bokeh). Four XD Linear (Extreme Dynamic) Motors deliver fast, precise, and quiet autofocus and tracking in this compact-sized and lightweight Sony G Master lens. Internal focusing ensures the angle of view is stable during focusing (focus breathing minimised). An incredible lens for video, the SEL1224GM delivers smooth, fast and continuous auto focus performance for movie shooting.